SGI and SUN monitors don't have the same 13W3 pinout, so it can't
work (I tried a long time ago with an INDY monitor on a sparc classic)

You can find many 13w3 pinout here :
http://www.gruftie.net/ibm/13w3/13w3_pinout.html

13W3 Sun Color
1152x900
61 - 89 kHz, 60 - 80Hz

Signal Type: Analog
Pin A1 - Red/Red Ground
Pin A2 - Green/Green Ground
Pin A3 - Blue/Blue Ground
Pin 1 - N/C
Pin 2 - N/C
Pin 3 - Sense 2
Pin 4 - Sense Return
Pin 5 - Composite Sync
Pin 6 - N/C
Pin 7 - N/C
Pin 8 - Sense 1
Pin 9 - Sense 0
Pin 10 - Composite Sync Return

13W3 SGI (Silicon Graphics)
1024 x 768 & 1280x1024
30-82kHz, 60-76Hz

Signal Type: Analog
Pin A1 - Red/Red Ground
Pin A2 - Green/Green Ground
Pin A3 - Blue/Blue Ground
Pin 1 - Monitor Type 3
Pin 2 - Monitor Type 0
Pin 3 - Composite Sync
Pin 4 - Horizontal Drive
Pin 5 - Vertical Drive
Pin 6 - Monitor Type 1
Pin 7 - Monitor Type 2
Pin 8 - Digital Ground
Pin 9 - Digital Ground
Pin 10 - Sync 2

--
Julien NOEL

* Pavel Cahyna <pcah8322@artax.karlin.mff.cuni.cz> wrote:

> Date: Sun, 19 Jan 2003 19:13:56 +0100
> From: Pavel Cahyna <pcah8322@artax.karlin.mff.cuni.cz>
> To: port-sparc@netbsd.org
> Subject: monitor connector
> Reply-To: Pavel Cahyna <pavel.cahyna@st.mff.cuni.cz>
> User-Agent: Mutt/1.3.28i
> 
> [ Please Cc: me, I'm not subscribed to this list ]
> 
> Hello,
> 
> I've noticed that the Sun GX framebuffer has the same connector as SGI
> machines (3 large holes + lot of smaller ones). If I plug a Sun monitor
> to an Indy or a SGI monitor to a Sparcstation, will it "just work" or
> are problems to be expected?
> 
> Thanks	Pavel
>